Nano-TaC powder synthesized using modified spark plasma sintering apparatus and its densification

被引：30

作者：

Feng, Lun ^{[1
,2
]}

Lee, Sea-Hoon ^{[2
]}

Yoon, Bo-La ^{[1
,2
]}

机构：

[1] Pusan Natl Univ, Sch Mat Sci & Engn, Busan 609735, South Korea

[2] Korea Inst Mat Sci, Div Powder Ceram Res, Chang Won 641831, South Korea

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 09期

关键词：

Powders: solid state reaction; Sintering; Carbides; TANTALUM CARBIDE; CERAMICS; NBC;

D O I：

10.1016/j.ceramint.2015.05.124

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Using a modified spark plasma sintering apparatus, nano-tantalum carbide powder was synthesized at 1450 degrees C by the carbothermal reduction of Ta2O5. The synthesized TaC powder had ultra-fine particle size of 62 nm and a low oxygen content of about 0.5 wt%. The metal basis purity of the synthesized powder was 99.94%. The particle growth during synthesis was effectively suppressed by using the modified spark plasma sintering process due to the low synthesis temperature and fast heating/cooling rate. Dense monolithic TaC ceramics were obtained by sintering the synthesized powder without sintering additives at 2200 degrees C for 30 min under. 80 MPa pressure. The average grain size of the dense TaC ceramics was 4 mu m. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：11637 / 11645

页数：9

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